#calendar {
    width: 80%;
    margin: 0 auto;
    box-shadow: 0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 3px 1px -2px rgba(0, 0, 0, 0.1), 0 1px 5px 0 rgba(0, 0, 0, 0.12);
}

.month {
    width: 100%;
    background: #00B8EC;
}

.month ul {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: space-between;
}

.year-month {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-around;
}

.year-month:hover {
    background: rgba(150, 2, 12, 0.1);
}

.choose-year {
    padding-left: 20px;
    padding-right: 20px;
}

.choose-month {
    text-align: center;
    font-size: 1.5rem;
}

.arrow {
    padding: 30px;
}

.arrow:hover {
    background: rgba(100, 2, 12, 0.1);
}

.month ul li {
    color: white;
    font-size: 20px;
    text-transform: uppercase;
    letter-spacing: 3px;
}

.weekdays {
    margin: 0;
    padding: 10px 0;
    background-color: #00B8EC;
    display: flex;
    flex-wrap: wrap;
    color: #FFFFFF;
    justify-content: space-around;
}

.weekdays li {
    display: inline-block;
    width: 13.6%;
    text-align: center;
}

.days {
    padding: 0;
    background: #FFFFFF;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
}

.days li {
    list-style-type: none;
    display: inline-block;
    width: 14.2%;
    text-align: center;
    padding-bottom: 15px;
    padding-top: 15px;
    font-size: 1rem;
    color: #000;
}

.days li .active {
    padding: 6px 10px;
    border-radius: 50%;
    background: #00B8EC;
    color: #fff;
}

.days li .other-month {
    padding: 5px;
    color: gainsboro;
}

.days li:hover {
    background: #e1e1e1;
}